Boiler-cleaner.



FJMCILVANE.

BOILER CLEANER.

APPLICATON FILED OCT. I. 15H5.

SHEET l.

Pzlened June 2 S H EETS F. McHJ/ANE.

BOILER CLEANER.

APPLICATION FILED om. 1. 1915.

2 SHEETSASHEET 2,

rfnin'n MerLvalvn, or DETROIT, MICHIGAN, Assrsnon To niaivicnn retirensrnornn'r i COMPANY, or DETROIT, MICHIGAN, A oonronerron oriniciara-an".

'ok all 'whom t may concer/1L.'

V,Bef it known that I, FRANK ltcILvANE,

a tizen of the United States of America, Hresid ing` at Detroit, in thecounty of `Wayne and State of Michigan, have invented certainnew anduseful Improvements in Boiler- Cleaners, of which 4the following is aspecifb cation, reference being had therein to the accoinpanyingVdrawings.

The invention relates to boiler cleaners of that type in which the sootis removed from the tubes and other surfaces by jets of steam blown froma perforated pipe or header. lt is the object of the invention toovercome injury to the apparatus, due to expansion and contraction, andto this end the invention comprises the construction as hereinafter setforth.

ln the drawings:

Figure l. is a plan view showing my improved construction as applied toa boiler;

Fig. 2 is a vertical cross section thereof; and

Fig. 3 is an enlarged section through the furnace Wall at the point ofentrance of the cleaner.

A are the Walls of the furnace, and 'B are a series of tubes or iiuesforming a portion of the boiler. Heretofore such construction of boilershave been provided with cleaners comprising a pipe or header extendingthrough the furnace wall, and having a series of nozzles or jet openingsfor directing steam against the tubes. The jets are di rected along.different portions of the surface of the tubes bv a rotary movement ofthe header, which is imparted through 'the medium of a hand-Wheeloutside of the furn nace Wall. j

One difficulty that has been experienced with apparatus ofthis type isthe differential expansion and contraction which causes the warping orbending of the parts. Thus 'the coefficient of expansion of the metaldiffering' from that of lthe furnace Wall will produce a relativedisplacement, and Where, as is generallyithe case, there are support inghearings for the cleaner which are attached to the boiler tubes, adistortion is produced. l have overcome this defect by a floatingconstruction, in which the cleaner is free' to move with the tubularstructure Von which it is journaled, While at the saine time provisionis made for extending the header through the furnace Wall Withoutinterference with its freedom of movement.

Specification of Letters latent.

BOILER-CLEANER.

Patented dune 26, ttlll'.

Application filed etober 1, 1915. Serial No. 53,618.

ln detail, C is the tube or header extend` ing transversely of thefurnace adjacent to the tubes l, and having' a series of jet nozzles l.)projecting laterally therefrom. E is a supporting journal bearing forthe header which is secured to the tubular structure by suitable means,such as the ,clamps F. A plurality of these bearings are providedsuitably distributed to sustain the header independently of any othersupport. F' is a sleeve or bushingt in the 'wall A forming an opening;for the passage of the header, the diameter of this opening` being;suflicientlyy greater than that of the header to permit relative lateralmovement. a disk-shaped head mounted upon the header and engaging auannular recess l-i in the sleeve, preferably :formed in a lateral ex-ntension l thereof, having a closing' cap d.

The arrangement is such that the disk (i. which closely lits the headerjf), also bear.,- against the inner face of the cap d, closing. theopening l therein, which is larger than the header C. Thus 'where thereis anexoansion of the internalstructure the header is moved in rela-tionto the Walls, 'this movement being permitted Without binding orunsealing' the opening' through said wall.

The header C is provided with afhand- Wheel L, arranged outside of thefurnace, by means of which it may be rotated to sweep the jets over 'thesurface of the tubes. is a stuffing box forming the swivel conn nectionbetween the header and an external conduit N, and (l is a flexibleconduit connecting; the conduit N with a supply con duit l). Thisflexible connection permits the header te lmove without restriction fromthe supply conduit, which might otherwise interfere with its freedom ofmovement.

1What l claire my invention ic l. rlihe combination with a :furnace Wallprovided With an aperture, of a tabular boiler, a cleaner comprising, atubular'header passing; through the aperture in said 'wall withclearance therein, `said header being mounted upon and adapted to doetwith the tubular boiler, and means for sealing the aperture around theheader in said Wall.

2. rl"he combination with a furnace. Wall provided with an aperture, ofa tubular boiler, a cleaner comprising a tubular.k rotary headerextending through the aperture in said wall and mounted upon and adaptedto float With said boiler, stationary supply conduit, anda flexibleconnection between said stationary supply conduit and said header.

3. The combination with a furnace Wall provided With an aperture, of atubular boiler, a cleaner comprising a tubular header extending throughsaid aperture and mounted upon and adapted to float With said boiler, abushing Within said aperture form ing an opening of greater diameterthan said header, through which the latter passes, means for sealing theopening through said bushing, and means exterior to said Wall foractuating rotation of said header.

4. The combination with a furnace Wall Yprovided With an aperture, of atubular allowing lateral motion of the disk and header.

5. The combination With a furnace Wall providedwith an aperture, of atubular boiler, a tubular Irotary header mounted in journal bearingsupon saidboiler and eX-v tending outward through 'said aperture, abushing in said aperture of greater diameter ythan said header andforming a clearance space thereabout, a recess being formed in the outerend of said bushing, a cap closing said recess formed with an openingthrough which the header extends, said opening allowing lateral play oftheheader, and a collar on the header 'Within said recess for sealingthe opening in said cap.

In testimony whereof I affix my signature in presence of two Witnesses.

4ERANK MUILVANE. Witnesses: y l

W. R. LOBDELL, S. J. HERMAN.

